International Civil Aviation Organization. ATN Seminar and Third ATN Transition Task Force Meeting Singapore, March 2001

Transcription

1 ATNS - 4/1 International Civil Aviation Organization ATN Seminar and Third ATN Transition Task Force Meeting Singapore, March 2001 Agenda Item 4: ATN Air-Ground Application CONTROLLER PILOT DATA LINK COMMUNICATION (CPDLC) CONTEXT MANAGEMENT (CM) OVERVIEW (Presented by Vic Patel, USA)

2 Federal Aviation Administration (FAA) ~ ATN Seminar - CPDLC ~ Singapore March 2001 Federal Aviation Administration (FAA) William J. Hughes Technical l Center (WJHTC) Vic Patel, FAA/ACT-350 ATN Technical Lead

3 AGENDA ATN Communication overview Controller Pilot Data Link Communication (CPDLC) overview Context Management (CM) overview FAA/U.S. CPDLC implementation phases Current status Future Activities

4 Open Systems Layer Structure System A System B Application Presentation Session Transport Network Link Physical Network Link Physical Network Link Physical Application Presentation Session Transport Network Link Physical

5 ATN ROUTER PACKAGES Airborne System Airborne End System Airborne Router (Boundary Intermediate System) Ground Systems Ground End System Ground Router (Boundary Intermediate System) End System Intermediate System

6 CONCEPTUAL MODEL OF THE ATN End System (ES) Application Process ATN End-to to-end End System (ES) Application Process Application Entity Upper Layer Communications Service ATN Communication Services End-to to-end ATN Internet Communication Services End-to to-end Application Entity Upper Layer Communications Service Internet Communications Service Intermediate System (IS) Intermediate System (IS) Internet Communications Service Subnetwork Subnetwork Subnetwork

7 ATN ROUTER CLASSES Airborne End System Upper Layer Transport Layer Network Layer Airborne Boundary Intermediate System SARPs Class-6 Router Network Layer Data Link Layer Physical Layer Mobile Network Data Link Layer Physical Layer End System Ground/Ground Boundary Intermediate System Air/Ground Boundary Intermediate System End System Upper Layer Transport Layer Network Layer Data Link Layer Physical Layer SARPs Class-4 Router Network Layer Data Link Layer Physical Layer SARPs Class-5 Router Network Layer Data Link Layer Physical Layer Upper Layer Transport Layer Network Layer Data Link Layer Physical Layer Ground Network

8 Application Layer System A System B Application Presentation Session Transport Network Link Physical Application Presentation Session Transport Network Link Physical

9 ATN FastByte Protocol Stack Application in ASN1 PER Presentation Session Transport Network Link Physical FastByte FastByte Application in ASN1 PER Presentation Session Transport Network Link Physical

10 ATN building components ATN Application ES ATN Application IS IS ES IS IS ATN Internet IS ATN Application IS ES ATN ES ATN Application ES ATN Application

11 The Internetworking Different Services Reliable Connection oriented (e.g. X.25) Unreliable Connection Mode (e.g. Frame Relay) LAN Connectionless (e.g. Ethernet) Different Addressing Plans X.25 DTE Addresses (X decimal digits) IEEE LAN Addresses (A.B.C.D - 48 bits)

12 End-to to-end Internetworking Requires an Internetwork Protocol Universally known Packet Format Created by End System Forwarded by Router Received by Destination End System Requires an Addressing Plan Gives a Unique Address to every End System Used by Routers when forwarding

13 ATN Internet Protocols ISO-8073 Class 4 Transport Protocol (TP4) ISO-8602 Connectionless Transport Protocol ISO-8473 Connectionless Network Protocol (CLNP) ISO Inter-Domain Routing Protocol (IDRP) ISO Intra-Domain Routing Protocol (IS-IS) IS) ISO-9542 End System to Intermediate System Routing Protocol (ES-IS)

14 ATN Communications Model Application Transport COTP or CLTP TPDU Header User Data Application Transport Network Header User Data CLNP NPDU Network Router Router Router Subnetwork 1 Subnetwork 2 Subnetwork 3 Subnetwork 4

15 End System Protocol Architecture ATN End System Support Application ASEs CPDLC, CM, ADS, FIS Fast BYTE Session & Presentation Layers CO and CL Transport Layer CL Network Layer ES-IS Routing End System Application ASEs Fast Byte Presentation Session COTP / CLTP CLNP Data Link Physical Subnetwork

16 Intermediate System Protocol Architecture IS can be Air/Ground Ground/Ground Airborne ISs Support CL Network Layer Mobile SNDCF IDRP ES-IS Routing CLNP Intermediate System (ATN Router) SNDCF SNAcP Data Link Physical Subnetwork IDRP ES-IS CLNP SNDCF-Mobile SNAcP Data Link Physical Mobile Subnetwork

17 ATN End Systems Protocols Required TP4 (with mandatory checksum support) CLNP Protocols Recommended ES-IS

18 ATN Routers CLNP Required by all ATN Routers IDRP Required by all Inter-Domain Routers Air-Ground Data Links Between Organizations ES-IS Required by Air-Ground Routers IS-IS and ES-IS Recommended within an organization

19 TP4 Functions Connection Mode Protocol Ensures end-to to-end Reliable Delivery Provides a Checksum on each Packet Retransmits on Packet Loss or Corruption Provides End-to to-end Flow Control

20 Connectionless Network Protocol (CLNP) 81h Len Dest Source Options & User Data Created by Sender Sender sends it and forgets it Interpreted by Routers Delivered to Destination System

21 CLNP Functions Simple Datagram Format Message Header Identifies Source and Destination Priority Traffic Type AOC Routing Requirements ATSC Class

22 CPDLC Service Provision Use of the ATN Control Function CPDLC ASE D-Start D-End D D-Data D Data D-AbortD Dialogue Service ACSE

23 CPDLC Functions Controller-Pilot Message Exchange Function Transfer of Data Authority Function Down Stream Clearance Function Ground Forward Function

24 CPDLC Services CPDLC-start service DSC-start service CPDLC-message service CPDLC-end service DSC-end service CPDLC-forward service

25 Roger (No Parameters) Sample CPDLC Messages WILCO (No Parameters) Affirm (No Parameters) AT [time] EXPECT CLIMB TO [level] CLEARED [ route clearance] SQUAWK MODE CHARLIE REPORT REMAINING FUEL AND PERSONS ON BOARD

26 Context Management Users CM Users are: Aircraft ATN Communications System ATC ATN Communications Systems In preparation for: The ADS Application The CPDLC Application The FIS Application

27 CM-logon service CM-update service CM-contact service CM-end service Context Management Services CM-forward service CM-user user-abort service CM-provider provider-abort service Getting To Know You

28 CM Service Provision Control Function CM ASE D-Start D-End D D-Data D Data D-AbortD Dialogue Service ACSE

29 CM Logon Protocol CM-Ground Ground-User CM Service Provider CM-START Req CM-Air Air-User CM-logon Req CM-logon Ind CM-START Ind CM-logon Rsp CM-START Rsp CM-START Cnf CM-logon Cnf

30 FAA CPDLC Program Requirements Reduce voice congestion on individual frequencies Provide for more dynamic and efficient Air/Ground information exchange mechanism, thereby increasing productivity Reduce operational error resulting from misunderstood instructions and read-back errors Enable alternate method of communication in event of stuck microphone or other voice problem

31 FAA CPDLC I/ATN Architecture Three Major Infrastructures: Ground - Ground Infrastructure FAA G-BIS G to ARINC G-BISG FAA - ARINC Activities FAA Domain integration VDL2 Subnetwork Infrastructure ARINC Ground ATN/VDL2 Service provider Rockwell-Collins avionics provider for American Airlines End-to to-end Infrastructure All of the above plus CPDLC, CMA, Host, and DSR American Airlines with ES (CPDLC, CMA) and display

32 Ground - Ground Key Components: FAA s Two G-BIS G (ATN Back Bone Routers) - CPDLC/ATN traffic FAA s One ATN Router for Maintenance - Remote access from TC, using Packet Assembler Dissembler (PAD) FAA s Two HID/NAS LAN CISCO Routers Data Link Application Processor (DLAP) & ATN Router communication ARINC s Network - Allows access to ATN Ground routers ARINC s GBIS - Exchange ATN routes between FAA and ARINC domains FAA s NADIN II - PSN for backbone and connections between FAA and ARINC domains

33 FAA CPDLC Program Build 1 (Domestic CPDLC) - ground initiated only ATN complaint version of Transfer of Communication (TOC), Initial Contact (IC), Altimeter Settings (AS) and free text messages Use VDL Mode 2 as Air/Ground Subnetwork Key site IOC in Miami, FL: June 2002 Build 1A (Enhanced CPDLC) ATN compliant speed, heading, altitude assignment, and route clearance messages, Standby/Deferred/Unable Message Use VDL Mode 2 as Air/Ground Subnetwork Key site IOC: June 2003 National deployment (all 20 domestic ARTCCs) complete by Dec-2004

34 FAA CPDLC Program Build 2 (Domestic/International CPDLC) ATN complaint services (~ 114 operational messages) Includes Oceanic message support Will define the beginning of transition from FANS 1/A to ATN Use VDL Mode 2 as Air/Ground Subnetwork Integrate in Free Flight Phase II Include ATN Security (SARPS Sub-Vol. VIII) Key site IOC: 2006 Build 3 National deployment complete by Dec-2006 Expanded ATN message set Integration with Decision Support Systems Use NEXCOM as Air/Ground Subnetwork National deployment

35 FAA CPLDC I/ATN OPERTAIONAL TESTING Objectives a. Ensure that US National Air Space (NAS) functionality, as existed prior to the installation of the CPDLC I capability, is not degraded. b. Verify that CPDLC I can be integrated with the ATN in a VDL-2 environment. c. Evaluate the CPDLC I system functionality/usability/maintainability from an Air Traffic (AT) and Airway Facilities (AF) perspective. d. Evaluate the CPDLC I system functionality/usability from controller and flight crew perspective. e. Evaluate CPDLC I system from complete end-to-end perspective.

36 FAA CPLDC I/ATN OPERTAIONAL TESTING (cont d) Objectives OT will verify that Critical Operational Issues (COIs) have been resolved, and specifically will ensure that that the modified HCS and DLAP are suitable for and can effectively be used in their intended environment and that the modified HCS and DLAP meet their required levels of performance. Suitability, effectiveness and performance with respect to COIs will be determined against specific Measures of Suitability (MOSs), Measures of Effectiveness (MOEs), and Measures of Performance (MOPs) described in OT plan.

37 FAA CPLDC I/ATN OPERTAIONAL TESTING (cont d) Phase I Evaluated the CPDLC functionality in a simulated operational environment with field users (Miami air traffic controllers). The users had an opportunity to see, play and feel CPDLC using the DSR glass. Controllers received and evaluated the training that has been prepared for training the entire center. All of their recommendations, concerns and PTRs encountered during OT have been addressed.

38 FAA CPLDC I/ATN OPERTAIONAL TESTING (cont d) Phase II Goal is to evaluate the CPDLC functionality in a REAL end-to-end environment. Other category that will be evaluated are: Security, Service Certification, Menu Build, Supervisory functions, Training materials for AF and Suitability aspects of the system. For this go around we don't have plans to bring controllers from Miami. We will have Supervisors and AF personnel from Miami participating in OT.

39 FAA ATN Ground Service Locations during CPDLC I ZAN ZSE ZMP ZB W ZAU ZOB ZNY NN CC ZDV ZKC ZID DCC TC ZOA ZLC ZDC ZLA ZAB AM C ZME TC ZF W ZTL NN CC ZMA ZHN ZJX ZHU = FAA BIS G/G Router remote access Location = FAA CPDLC I/ATN and BIS G/G Router Locations ZMA ZSU

40 FAA CPDLC I End-to-End Connectivity Airborne Element TC G/G ATN ROUTER DSRs New and Modified Software Display CMU FAA Domain - Ground Element *NSM *RMMS VHF Transceiver * NADIN II VDL-2 Ground Stations *Host CPDLCS/W *HID New Hardware & Software *NASLAN DLAP *NAS Router New Hardware & Software CMA G/G ATN Routers - Interface Requirement KEY: DSR- Display System Replacement DLAP- Data Link Application Processor HID - Host Interface Device CMA- Context Management Application NAS - National Airspace System NADIN- National Airspace Data Interchange Network LAN - Local Area Network ATN- Aeronautical Telecommunication Network NSM - Network System Manager CMU- Communications Management Unit RMMS- Remote Maintenance Monitoring System * Network Packet Service Provider ARINC Domain VDL-2 2 Element

41 Vertical Profile for CPDLC Build I Miami Departure 6) Transfer via datalink to next Miami Sector 7) Transfer via datalink to next Center ~ FL350 5) Transfer via datalink to next Miami Sector 4) Auto Altimeter uplink 3) Aircrew enters Miami Center and Contacts via R/T ~ 16,000 FT - FL190 2) Auto CPDLC Connection ~ 7000 FT RDR Contact & FP Correlation 8) CPDLC Connection Termination Gate/Pushback or Taxi 1) Log-On to FAA CM Logon Request and Response

42 Flight Profile for CPDLC Build I Miami Over-Flight 1) Log-On to FAA CM Logon Request and Response 3) Aircrew enters Miami Center and Contacts via R/T 5) Transfer via datalink to next Miami Sector VDL-2 Coverage KZMA 4) Transfer via datalink to next Miami Sector 6) Transfer via datalink to next Center 2) Auto CPDLC Connection 7) CPDLC Connection Termination

43 Vertical Profile for CPDLC Build I Miami Arrival 2) Auto CPDLC Connection 4) Transfer via datalink to next Miami Sector 3) Aircrew Enters Miami Center and Contacts via R/T ~ FL350 5) Transfer via datalink to next Miami Sector 6) Auto Altimeter uplink 7) Transfer via datalink to Miami Approach 8) CPDLC Connection Termination ~ 10,000 FT ~ FL240 ~ 18,000 FT KZMA VDL-2 Coverage 1) Log-On to FAA CM Logon Request and Response

44 CPLDC I & CMA

45 HID/NAS LAN

46 NADIN II

47 G/G BIS (ATN ROUTER)

48 CPLDC I & CMA RACK

49 FAA ATN Ground Service Locations during CPDLC IA and II ZAN ZSE ZMP ZB W ZAU ZOB ZNY NN CC ZDV ZKC ZID DCC TC ZOA ZLC ZDC ZLA ZAB AM C ZME TC NN CC ZF W ZTL ZHN ZJX ZHU = FAA CPDLC IA Locations ZMA = FAA ATN BIS G/G Router and AMHS Locations ZMA ZSU

50 FAA CPDLC Implementation Program Avionics CPDLC I CPDLC IA CPDLC II CPDLC III Air/Ground Subnetworks VDL2 NEXCOM Ground Keysite CPDLC I CPDLC IA Keysite Deployment Keysite CPDLC II Deploymt Terminal & Oceanic

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52 Open Systems Layer Structure Each layer provides a standard communications service to the layer above and below, and embodies one or more standard protocols to support that service. Within each 'layer', the lower layer service is enhanced by means of local functionality and the layer protocol to provide a richer service to the next higher layer. The Physical Layer service and protocol is determined by the technology of the telecommunications link being used. The physical layer defines actual physical connections. E.g. EIA-530, RS-232. Ethernet, FDDI

53 Open Systems Layer Structure (cont d) The Link Layer standardizes the way in which data is transferred across a particular type of physical connection to overcome errors introduced into the data stream by the Physical Layer. There are different link layer standards for different physical media. E.g SDLC, HDLC MAC etc.

54 Open Systems Layer Structure (cont d) The Network Layer is basically concerned with controlling network connections depending on the type of communications network used. It is concerned with establishing, for example, X.25 switched virtual circuits between systems and providing an error corrected, flow controlled data transfer service to the Transport Layer. The Network Layer is very complex since it must also include functionality to deal with end to end data connections which may need to extend across one or more different types of network, including connection oriented and connectionless.

55 Transport & Lower Layers Connection Oriented Connectionless T-Connect T-Release T-Data T-Unitdata Class 0 Class 1 Class 2 Transport Layer Class 3 Class 4 N-Connect N-Release N-Data N-Unitdata Network Layer Subnetworks

56 Session Layer S-Give Token S-Please Token S-Connect S-Release Minor Sync Major Sync Activity S-Data x4 Session Layer T-Connect T-Release T-Data E-Data T-Unitdata Class 0 Class 1 Class 2 Transport Layer Class 3 Class 4 Networks

57 Presentation Layer P-Context Define P-Context Delete P-Data (x4) P-Connect P-Release P-Minor Sync P-Major Sync P-Activity Presentation Layer S-Give Token S-Give Token S-Data S-Connect T-Connect S-Release T-Release S-Minor Sync Session Layer T-Data S-Major Sync Exp-Data T-Unitdata S-Activity Transport & Networks